Whether the will of God is changeable?

Objections

Objection 1 : It seems that the Will of God is changeable. For the Lord says (Gn. 6:7): "It repenteth Me that I have made man." But whoever repents of what he has done, has a changeable will. Therefore God has a changeable will.
Objection 2 : Further, it is said in the person of the Lord: "I will speak against a nation and against a kingdom, to root out, and to pull down, and to destroy it; but if that nation shall repent of its evil, I also will repent of the evil that I have thought to do to them" (Jer. 18:7,8) Therefore God has a changeable will.
Objection 3 : Further, whatever God does, He does voluntarily. But God does not always do the same thing, for at one time He ordered the law to be observed, and at another time forbade it. Therefore He has a changeable will.
Objection 4 : Further, God does not will of necessity what He wills, as said before (Article [3]). Therefore He can both will and not will the same thing. But whatever can incline to either of two opposites, is changeable substantially; and that which can exist in a place or not in that place, is changeable locally. Therefore God is changeable as regards His will.